Can anyone help me with this question please I really need help please I’ll mark as brainliest

Mathematics

1 answer:

tia_tia [17]2 years ago

4 0

Answer:

$f(x)=-11\times(7^x^-^1)$

Step-by-step explanation:

Stare at the numbers. Especially the first two. First one is -11. Second is $-11\times 7$ . Let's guess you keep multiplying. $-77\times 7=-539$ . Smells correct, let's confirm with the last one: $-539\times7 = -3773$ . I think we found a pattern. Each element is 7 times the previous one. With some practice you can just write the function, else let's divide by -11 away and let's see what we get:

$f(1) = 1=7^0; f(2)=7; f(3)=7^2; f(4)=7^3$ . Basically, the exponent is 1 less than the value we're evaluating the function. That leads tho the following

$f(x)=-11\times(7^x^-^1)$

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The graph 4x^2-4x-1 is shown. Use the grpah to find the estimates for the solutions of 4x^2-4x-1=0 and 4x^2 - 4x-1=2

Darina [25.2K]

Answer:

a) The estimates for the solutions of $4\cdot x^{2}-4\cdot x -1 = 0$ are $x_{1}\approx -0.25$ and $x_{2} \approx 1.25$ .

b) The estimates for the solutions of $4\cdot x^{2}-4\cdot x -1 = 2$ are $x_{1}\approx -0.5$ and $x_{2} \approx 1.5$

Step-by-step explanation:

From image we get a graphical representation of the second-order polynomial $y = 4\cdot x^{2}-4\cdot x -1$ , where $x$ is related to the horizontal axis of the Cartesian plane, whereas $y$ is related to the vertical axis of this plane. Now we proceed to estimate the solutions for each case: